Page 92 of 150

8-7
8
EBU23071TIPSome maintenance items need more frequent service if you are riding in unusually wet, dusty, sandy or
muddy areas, or at full-throttle.Hydraulic brake service
Regularly check and, if necessary, correct the brake fluid level.19Engine oil filter ele-
mentReplace.√√√
20 Cooling systemCheck coolant level and ATV for coolant leakage,
and correct if necessary.√√√√√
Replace coolant. Every 2 years
21*Moving parts and
cablesLubricate.√√√√
22*Throttle lever hous-
ing and cableCheck operation and correct if necessary.
Check throttle cable free play and adjust if neces-
sary.
Lubricate throttle lever housing and cable.√√√√√
23*Front and rear brake
switchesCheck operation and correct if necessary.√√√√√
24*Lights and switchesCheck operation and correct if necessary.
Adjust headlight beams.√√√√√ NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1300
(800)2500
(1600)2500
(1600)5000
(3200)
hours 20 80 160 160 320U1AS60E0.book Page 7 Friday, February 6, 2009 1:27 PM
Page 95 of 150
8-10
8 To remove the spark plug
1. Remove the spark plug cap.
2. Remove the spark plug as shown, with the
spark plug wrench included in the owner’s tool
kit.To check the spark plug
1. Check that the porcelain insulator around the
center electrode of the spark plug is a medi-
um-to-light tan (the ideal color when the ATV
is ridden normally).
TIPIf the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-
stead, have a Yamaha dealer check the ATV.
1. Spark plug cap
1
1. Spark plug wrench
1
U1AS60E0.book Page 10 Friday, February 6, 2009 1:27 PM
Page 109 of 150
8-24
8 16. Install the seat.
TIPThe air filter element should be cleaned every 20–
40 hours. It should be cleaned and lubricated more
often if the ATV is operated in extremely dusty ar-
eas. Each time the air filter element maintenance
is performed, check the air inlet of the air filter case
for obstructions. Check the air filter case rubber
joint to the throttle body and the rubber joint mani-
fold fittings for an air-tight seal. Tighten all fittings
securely to avoid the possibility of unfiltered air en-
tering the engine.EBU27701Cleaning the spark arrester Select a well-ventilated area free of combustible
materials and make sure the exhaust and muffler
are cool.
1. Remove the bolt.2. Remove the tailpipe by pulling it out of the
muffler.
3. Tap the tailpipe lightly, and then use a wire
brush to remove any carbon deposits from the
spark arrester portion of the tailpipe and inside
of the tailpipe housing.
1. Bolt
1
U1AS60E0.book Page 24 Friday, February 6, 2009 1:27 PM
Page 148 of 150

INDEX
AAccessories and loading ................................................ 6-7
Air filter element, cleaning ............................................ 8-20BBattery .......................................................................... 8-41
Brake and clutch levers, checking and lubricating ....... 8-38
Brake fluid, changing .................................................... 8-31
Brake fluid level, checking ............................................ 8-29
Brake lever ..................................................................... 4-8
Brake lever free play, checking the front ...................... 8-31
Brake light switches ..................................................... 8-33
Brake pads, checking the front and rear ...................... 8-28
Brake pedal .................................................................... 4-8
Brake pedal, checking and lubricating ......................... 8-39
Brake pedal position, checking .................................... 8-32
Brakes .......................................................................... 8-28
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................. 8-38
Chassis fasteners ........................................................... 5-6
Cleaning ......................................................................... 9-1
Clutch lever .................................................................... 4-7
Clutch lever free play, adjusting ................................... 8-34
Coolant .................................................................. 5-3, 8-17
Coolant temperature warning light ................................. 4-2DDrive chain ..................................................................... 5-4
Drive chain, lubricating ................................................. 8-37Drive chain slack .......................................................... 8-35
EEngine break-in .............................................................. 6-5
Engine idling speed ...................................................... 8-26
Engine oil ....................................................................... 5-3
Engine oil and oil filter element .................................... 8-12
Engine, start ................................................................... 6-1
Engine stop switch ......................................................... 4-5
Engine trouble warning light ........................................... 4-3FFuel ....................................................................... 4-11, 5-3
Fuel level warning light ................................................... 4-3
Fuel tank cap ................................................................ 4-11
Fuses, replacing ........................................................... 8-44HHandlebar switches ........................................................ 4-5
Headlight beam, adjusting ............................................ 8-47
Headlight bulb, replacing .............................................. 8-46IIdentification numbers .................................................. 11-1
Indicator lights and warning lights .................................. 4-2
Instruments, lights and switches .................................... 5-6KKey identification number ............................................. 11-1LLabel locations ............................................................... 1-1
Light switch .................................................................... 4-6
U1AS60E0.book Page 1 Friday, February 6, 2009 1:27 PM